I've often seen results that were similar, that they just don't do that well. But then I've seen a few that say they get very good results. Ultimately I'm guessing it has a lot to do with how well they seal the bore. Maybe some of those had the deeper RB grooves and they just couldn't really seal it well. Who knows.
Thor bullets supposedly do quite well. I've not read of much with the Hornady bullets. I've used Lee REALs that showed great results at 50 yds, but haven't tested them further, but did buy a mold after that. Nearly touching.